Cooler



FIG. 1 is a front left perspective view of a cooler showing a first embodiment of our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left view thereof;

FIG. 4 is a right view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a front left perspective view of a cooler showing a second embodiment of our new design;

FIG. 7 is a front view thereof;

FIG. 8 is a left view thereof;

FIG. 9 is a right view thereof;

FIG. 10 is a rear view thereof;

FIG. 11 is a front left perspective view of a cooler showing a third embodiment of our new design;

FIG. 12 is a front view thereof;

FIG. 13 is a left view thereof;

FIG. 14 is a right view thereof; and,

FIG. 15 is a rear view thereof.

The dot-dash-dot broken line showing represents unclaimed boundaries of the claimed design. The dot-dot broken line showing represents environmental structure and forms no part of the claimed design. 

The ornamental design for a cooler, as shown and described. 